CVE-2023-28727
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedPanasonic AiSEG2 versions 2.00J through 2.93A allows adjacent attackers bypass authentication due to mishandling of X-Forwarded-For headers.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe Panasonic AiSEG2 management system versions 2.00J through 2.93A contains an authentication bypass vulnerability where the application improperly handles X-Forwarded-For HTTP headers. Attackers on the adjacent network can spoof their IP address by manipulating this header, allowing them to bypass IP-based authentication controls and gain unauthorized access to the system.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 2.00j, <= 2.93aCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify AiSEG2 firmware versionAccess the AiSEG2 web management interface and navigate to System Settings > Firmware Information, or check the system status page for the installed firmware version number (format: X.XXx)Affected if The displayed version is between 2.00j and 2.93a inclusive (case-insensitive match)
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Verify IP-based authentication is configuredIn the AiSEG2 web interface, go to Security Settings or Access Control settings and check if IP address filtering, IP-based access control, or IP whitelist features are enabledAffected if IP-based authentication or IP access control lists are currently active on the system
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Check X-Forwarded-For header handlingInspect the AiSEG2 web server configuration or HTTP access logs to determine if the application processes X-Forwarded-For headers for authentication or access control decisionsAffected if The system uses X-Forwarded-For headers to determine client IP addresses for security decisions
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Assess network exposureDetermine if the AiSEG2 management interface is accessible from networks beyond the trusted local network segment (adjacent networks, DMZ, or external interfaces)Affected if The web interface is reachable from network segments that contain untrusted or adjacent network attackers
You are affected if your AiSEG2 firmware version falls within 2.00j through 2.93a, IP-based authentication is enabled, and the system processes X-Forwarded-For headers while being accessible from an adjacent or untrusted network.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply the vendor-supplied firmware update to the latest patched version. If immediate patching is not possible, implement additional network segmentation and restrict access to trusted IPs at the network perimeter, while also implementing server-side validation of X-Forwarded-For headers that cannot be easily spoofed.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-28727 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-28727 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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